CheckoutAPIService.createToken result block never called

[ajf-mr]

Describe the bug After migrating to v4.3.6, the CheckoutAPIService.createToken result block doesn't get called when using Apple Pay.

To Reproduce

1. Get a PKPayment from PKPaymentAuthorizationControllerDelegate didAuthorizePayment
2. Initialize CheckoutAPIService instance
3. Call CheckoutAPIService.createToken
4. Result block never gets called thus resulting in 'Payment not Completed' in Apple Pay

Expected behavior CheckoutAPIService.createToken result block should be called (failure or success)

Smartphone (please complete the following information):

• Device: iPhone XS
• OS: iOS 17.5.1

Additional context

• Can reproduce issue in both sandbox and production environments
• Can reproduce issue in other devices
• Same code works well with Frames v4.3.2

PKPaymentAuthorizationControllerDelegate

func paymentAuthorizationController(_: PKPaymentAuthorizationController, didAuthorizePayment payment: PKPayment, handler completion: @escaping (PKPaymentAuthorizationResult) -> Void) {
        handleApplePayPayment(payment) { token, message in
            if let token = token {
                self.token = token
                self.paymentStatus = .success
                completion(PKPaymentAuthorizationResult(status: .success, errors: nil))
            } else {
                self.errorMessage = message
                self.paymentStatus = .failure
                completion(PKPaymentAuthorizationResult(status: .failure, errors: nil))
            }
        }
    }

private func handleApplePayPayment(_ payment: PKPayment, completion: @escaping ApplePayCompletion) {
        let paymentData = payment.token.paymentData
        debugPrint(payment)
        let apiKey = UserDefaults.isAUUser ? AppConfig.checkoutApiKeyAU : AppConfig.checkoutApiKeyNZ

        let checkoutService = CheckoutAPIService(publicKey: apiKey,
                                                 environment: AppConfig.isDebugMode ? .sandbox : .production)
        checkoutService.createToken(.applePay(.init(tokenData: paymentData))) { result in

             /* THIS BLOCK NEVER GETS CALLED */

            debugPrint("checkout create token result \(result)")
            switch result {
            case let .failure(error):
                debugPrint("Checkout create token failed \(error)")
                var message = ApplePayError.invalidApplePayToken.message
                switch error {
                case .cardValidationError: message = ApplePayError.invalidCard.message
                case .userCancelled: message = ApplePayError.userCancelled.message
                default: ()
                }
                completion(nil, message)
            case let .success(tokenDetails):
                completion(tokenDetails.token, nil)
            }
        }
    }

• See Checkout logs produced in the console:

Event(typeIdentifier: "card_validator", time: 2024-06-19 07:04:06 +0000, monitoringLevel: CheckoutEventLoggerKit.MonitoringLevel.info, properties: ["CorrelationId": AnyCodable("873f0b53-1582-4621-85bf-9b4bf5d3d087")])

Event(typeIdentifier: "token_requested", time: 2024-06-19 07:04:06 +0000, monitoringLevel: CheckoutEventLoggerKit.MonitoringLevel.info, properties: ["CorrelationId": AnyCodable("873f0b53-1582-4621-85bf-9b4bf5d3d087"), "tokenType": AnyCodable("applepay"), "publicKey": AnyCodable("_KEY REDACTED_")])

Event(typeIdentifier: "token_response", time: 2024-06-19 07:04:07 +0000, monitoringLevel: CheckoutEventLoggerKit.MonitoringLevel.info, properties: ["tokenID": AnyCodable("_TOKEN REDACTED_"), "scheme": AnyCodable("VISA"), "tokenType": AnyCodable("applepay"), "httpStatusCode": AnyCodable(201), "publicKey": AnyCodable("_KEY REDACTED_"), "CorrelationId": AnyCodable("873f0b53-1582-4621-85bf-9b4bf5d3d087")])